I totally agree with Faralas that no-one on this thread can claim to be a true expert.  I love to share what I do know (Or think I know <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />) but there is no way I could or would claim any kind of expertise.
At best, I like to think I am a good amateur - but the operative word in that statement is amateur, I assure you!
One of the best things about this thread is that hopefully it will allow us all to pool what we know, and thus learn together <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />  It's the main reason I like it, I know that much <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />  I am learning new stuff all the time <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />